WO2014106317A1

WO2014106317A1 - Method for channel measurement, configuration method and apparatus for channel measurement

Info

Publication number: WO2014106317A1
Application number: PCT/CN2013/070004
Authority: WO
Inventors: 王轶; 徐月巧; 张磊
Original assignee: 富士通株式会社
Priority date: 2013-01-04
Filing date: 2013-01-04
Publication date: 2014-07-10
Also published as: US20150304878A1; KR101616236B1; KR20150092266A; CN104854898A; EP2942999A4; EP2942999A1; JP2016506188A

Abstract

Embodiments of the present invention provide a method for channel measurement, and a configuration method and apparatus for channel measurement. The method includes the following steps: a User Equipment (UE) receives Radio Resource Control (RRC) signaling sent by a base station, and the RRC signaling includes a channel measurement indication, a measurement carrier frequency and measurement bandwidth configured by the base station for the user equipment (301); the user equipment determines the type of the channel measurement according to the channel measurement indication (302), and the types of the channel measurement includes: the channel is measured based on the reference signal corresponding to the measurement carrier frequency, or the channel is measured based on the actual reference signal; the UE determines, according to the determined type of the channel measurement, the reference signal sequence for channel measurement (303); and the UE performs, by using the determined reference signal sequence, channel measurements on the configured measurement frequency and over the configured measurement bandwidth (304). By applying the method and apparatus of the present invention, a UE can correctly reconstruct the reference signal which is consistent with the reference signal been actually sent, thus the measurement can be achieved correctly.

Description

Channel measurement method, channel measurement configuration method and device

The present invention relates to the field of communications, and more particularly to a method and apparatus for configuring a channel $: method, channel measurement in a wireless communication system. Background technique

In a Long Term Evolution (LTE) system, measurements can be divided into adio link monitoring measurement, adio resource management measurement, and channel state information measurement. Users (UE, User Equipment) can perform measurement according to Cell-specific reference signals (CRS). For example, the downlink quality of the cell can be measured according to the CRS, and the reference signal reception quality can be obtained according to the CRS (RSRQ, Reference Signal Receiving). Quality) and Reference Signal Receiving Power (RSRP), and Channel Quality Indicator (CQI) based on CRS. The user may also perform measurement according to a channel state reference signal (CSI-RS, Channel State Information-Reference Signal), or may perform channel measurement according to a user-specific reference signal, such as a DM-RS (Demodulation Reference Signal). Channel estimation.

In order to enable the user to correctly demodulate CRS, CSI-RS and DM-RS (for example, antenna port 7-14) when determining the bandwidth information of the cell system, the sequence of the three reference signals is generated in the same manner. The mapping mode is based on the bandwidth of the cell system, and the sequence value of the reference signal is extended to both ends with the cell carrier frequency as the center. For example, the sequence of CRS is:

r _ln {m) =

The time-frequency resources mapped to CRS symbols are:

4

k = 6m +

3 if p {0,l}

1 if p 2,3}

= 0,1,...,2 · ^, - 1

+ NS ' ^DL -Nl (2) Taking the system bandwidth of 1.4 MHz as an example, the CRS symbols on the six physical resource blocks (PRBs) of the cell carrier frequency point are:

[ ? 4 ^P " ...... ) ί] = [^ (104) (105) r _{/ 3⁄4} (106) (107) ...... (114) (115)] With a system bandwidth of 5 For example, in MHz, the CRS symbols on the 25 PRBs centered on the cell carrier frequency point are:

? «,3⁄4 «,3⁄4 ...... «S] = h _3⁄4 (85) (86) (87) (88) ...... (133) (134)] where, the cell carrier frequency The CRS on the six PRBs centered on is the same as the CRS symbol at a system bandwidth of 1.4 MHz.

It is not difficult to see that although the bandwidth is different, when the carrier frequency points of the cell are the same and the CRS symbols on the central N PRBs are the same, the user can still uniquely determine the CRS symbols on multiple PRBs in the center when the bandwidth information is not acquired. . However, if the carrier frequency of the cell transmitting the reference signal is different, the CRS sequence is different. Among them, the bandwidth-limited machine type User Communication (MTC) is a scenario.

In Release 11 (version 11), 3GPP (The 3rd Generation Partnership Project) RAN (Radio Access Network) has initiated a RAN-enhanced research phase on MTC communication (Study Item, SI), and finally the research results are output in TR (Technical Report) 37.868. TR 37.868 mainly studies the business characteristics and models of different M2M (Machine-to-Machine, machine and machine) application scenarios, as shown in Table 1.

Table

Moreover, 3GPP RANI gives various techniques available to low-cost MTC users in TR 36.888, including: reducing the maximum bandwidth; single receiving RF links; reducing peak speed Rate; reduce transmit power; half-duplex mode; and reduce supportable transmit modes.

For the downlink, the method of reducing the maximum bandwidth can be further divided into: the radio frequency and the baseband bandwidth are both reduced; only the baseband bandwidth is reduced, but the baseband bandwidth of the data channel and the baseband bandwidth of the control channel are both reduced; and, only The baseband bandwidth of the data channel is reduced, and the baseband bandwidth of the control channel is the same as the carrier system bandwidth.

For the uplink, the method of reducing the maximum bandwidth can be further divided into: the radio frequency and the baseband bandwidth are both reduced; and the bandwidth is unchanged.

For an MTC user whose radio frequency and baseband bandwidth are both reduced or the baseband bandwidth is reduced but the baseband bandwidth of the data channel and the baseband bandwidth of the control channel are both reduced, it is impossible to completely acquire the signal transmitted over the entire carrier system bandwidth. Only some of the signals on the bandwidth supported by the MTC user can be obtained, and may still not be solved correctly. For example, if the system bandwidth is 20MHz, the maximum number of available resource blocks (RBs) is 110, and the bandwidth supported by the MTC users is 1.4MHz, and the maximum number of available resource blocks (RBs) is 6, then the user can only receive 6 RB signal. These 6 RBs may be located at the center of the carrier system bandwidth or at any location of the carrier system bandwidth, as shown in Figure 1. The MTC is implemented by detecting the PSS (Primary Synchronization Signal) / SSS (Secondary Synchronization Signal) and PBCH (Physical Broadcast Channel) of the center of the measured carrier. The user must first successfully access the carrier. Therefore, after the access, the working frequency of the MTC user is aligned with the carrier center frequency.

After successfully accessing the cell, the base station can configure the user to perform measurement, and the user reports the measurement result to the base station. The base station performs operations such as scheduling on the user based on the measurement result of the user. For bandwidth-limited MTC users, if the base station configures its frequency domain resources that measure non-central locations within the bandwidth of the cell, such as measurement object 2 and measurement object 3 as shown in Figure 2, the user needs to perform inter-frequency measurement. The existing system can configure the inter-frequency measurement for the user through the base station, and configure the measured carrier frequency and bandwidth information. The user will assume that the configured carrier frequency is the center frequency of the inter-frequency measurement object bandwidth, reconstruct the reference signal, and measure based on the reference signal.

However, the inventors found in the process of implementing the present invention that for this measurement, since the transmission of the reference signal is not centered on the carrier frequency of the configuration, the user is based on the carrier frequency of the configuration as the center carrier frequency. It is assumed that the reference signal is reconstructed, and the reference signal is inconsistent with the reference signal actually transmitted by the base station, so that the user cannot perform correct measurement based on the reconstructed reference signal.

It should be noted that the above description of the technical background is only for the purpose of facilitating the clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. Can't just because these programs are in the hair The background of the prior art is set forth and it is believed that the above-described technical solutions are well known to those skilled in the art. Summary of the invention

An object of the embodiments of the present invention is to provide a channel measurement method, a channel measurement configuration method, and a device, so as to support a user to correctly reconstruct a reference signal consistent with an actual transmission reference signal.

According to a first aspect of the embodiments of the present invention, a channel measurement method is provided, where the method includes: a user receiving RRC signaling sent by a base station, where the RRC signaling includes a channel measurement indication, and the base station is the user Configured measurement carrier frequency and measurement bandwidth;

Determining, by the user, a channel measurement type according to the channel measurement indication, where the channel measurement type includes: performing channel measurement based on a reference signal corresponding to the measurement carrier frequency, or performing channel measurement based on an actual reference signal; The type determines a reference signal sequence for performing channel measurements; and the user utilizes the determined reference signal sequence to perform channel measurements at the configured measurement carrier frequency with the configured measurement bandwidth.

According to a second aspect of the embodiments of the present invention, a method for configuring a channel measurement is provided, where the method includes:

The base station sends RRC signaling to the user, where the RRC signaling includes a channel measurement indication and a measurement carrier frequency and a measurement bandwidth configured by the base station for the user, so that the user determines a channel measurement type according to the channel measurement indication, the channel The measurement types include: performing channel measurement based on a reference signal corresponding to the measured carrier frequency, or performing channel measurement based on the actual reference signal.

According to a third aspect of the present invention, a user equipment is provided, where the user equipment includes: a receiving unit, which receives RRC signaling sent by a base station, where the RRC signaling includes a channel measurement indication, and the base station is The user-configured measurement carrier frequency and measurement bandwidth;

a first determining unit, configured to determine a channel measurement type according to the channel measurement indication, where the channel measurement type includes: performing channel measurement based on a reference signal corresponding to the measurement carrier frequency, or performing a channel second determining unit based on the actual reference signal, according to The determined channel measurement type determines a reference signal sequence for performing channel measurement;

And a measuring unit that performs channel measurement with the configured measurement bandwidth on the configured measurement carrier frequency using the determined reference signal sequence. According to a fourth aspect of the present invention, a base station is provided, where the base station includes: a sending unit that sends RRC signaling to a user, where the RRC signaling includes a channel measurement indication and the base station configures the user Measuring a carrier frequency and a measurement bandwidth, so that the user determines a channel measurement type according to the channel measurement indication, the channel measurement type includes: performing channel measurement based on a reference signal corresponding to the measurement carrier frequency, or performing channel measurement based on the actual reference signal .

According to a fifth aspect of the embodiments of the present invention, there is provided a communication system comprising the user equipment of the foregoing third aspect and the base station of the foregoing fourth aspect.

According to a sixth aspect of the embodiments of the present invention, there is provided a computer readable program, wherein when the program is executed in a terminal device, the program causes a computer to perform the channel measurement method according to the aforementioned first aspect in the terminal device .

According to a seventh aspect of the embodiments of the present invention, there is provided a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the channel measurement method of the first aspect described above in a terminal device.

According to an eighth aspect of the embodiments of the present invention, there is provided a computer readable program, wherein when the program is executed in a base station, the program causes a computer to perform a configuration method of channel measurement according to the aforementioned second aspect in the base station .

According to a ninth aspect of the embodiments of the present invention, there is provided a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a configuration method of channel measurement according to the aforementioned second aspect in a base station.

The beneficial effects of the embodiments of the present invention are as follows: With the method and apparatus of the embodiments of the present invention, the user can correctly reconstruct the reference signal consistent with the actual transmitted reference signal, thereby enabling correct channel measurement.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which illustrate the manner in which the principles of the invention can be employed. It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the spirit and scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising" or "comprising", when used herein, refers to the presence of a feature, component, step or component, but does not exclude the presence or addition of one or more other features, components, steps or components. DRAWINGS

Many aspects of the invention can be better understood with reference to the following drawings. The components in the figures are not drawn to scale, but only to illustrate the principles of the invention. To facilitate the illustration and description of some parts of the invention, the corresponding parts in the drawings may be enlarged or reduced. The elements and features described in one of the figures or one embodiment of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. In the accompanying drawings, like reference numerals refer to the In the drawing:

1 is a schematic diagram of a location of a carrier frequency resource of an MTC user on a system bandwidth;

2 is a schematic diagram of a base station configuration user performing inter-frequency measurement;

3 is a flowchart of a channel measurement method of Embodiment 1;

4 is a schematic diagram of a carrier frequency f _c upon which a base station transmits an actual reference signal;

FIG. 5 is a schematic diagram of comparison of a carrier frequency configured by a base station for a user and a carrier frequency based on a base station transmitting an actual reference signal;

6 is a schematic diagram of an offset between a measurement carrier frequency configured by a base station and a carrier frequency on which a base station transmits an actual reference signal;

7 is a flowchart of a method of configuring channel measurement of Embodiment 2;

8 is a schematic structural diagram of a user equipment of channel measurement in Embodiment 3;

Figure 9 is a block diagram showing the structure of a base station of Embodiment 4. detailed description

The foregoing and other features of the embodiments of the invention will be apparent from the These embodiments are merely exemplary and are not limiting of the invention. The embodiments of the present invention are described by taking the channel measurement and the channel measurement configuration of the MTC user as an example, but it can be understood that the embodiment of the present invention is not limited to the embodiment of the present invention. MTC users, for other users with limited bandwidth.

Example 1

Embodiment 1 of the present invention provides a channel measurement method. 3 is a flow chart of the method. Referring to FIG. 3, the method includes: Step 301: The user receives RRC signaling sent by the base station, where the RRC signaling includes a channel measurement indication, and a measurement carrier frequency and a measurement bandwidth configured by the base station for the user.

The channel measurement indication is used to indicate a channel measurement type. In the existing channel measurement process, since the RRC signaling does not include the channel measurement indication, the user performs regular channel measurement according to the measured carrier frequency and bandwidth configured by the base station, and as described in the background, for users with limited bandwidth The base station may configure its frequency domain resources to measure non-central locations within the bandwidth of the own cell. Such measurements may result in the user not being able to make correct measurements. According to the method of the embodiment, a channel measurement indication is newly added in the RRC signaling, and the channel measurement indication is used to indicate that the user performs the normal channel measurement as described above (that is, based on the reference signal corresponding to the measurement carrier frequency). Channel measurement) Whether to perform a newly defined channel measurement (ie, channel measurement based on the actual reference signal).

The channel measurement indication may indicate the channel measurement type by a 1-bit value, for example, indicating a normal channel measurement by "0", and indicating a newly defined channel measurement by "1".

The channel measurement indication may be located before the measurement target information of the RRC signaling, or may be located inside the measurement target information of the RRC signaling, and is specifically described in the following embodiments.

Step 302: The user determines a channel measurement type according to the channel measurement indication.

Wherein, as in the previous example, if the channel measurement indication is "0", the user determines to perform normal channel measurement, that is, based on the reference signal corresponding to the measurement carrier frequency, and performs channel measurement; if the channel measurement indication is "1", the user It is determined that the newly defined channel measurement is performed, that is, the channel measurement is performed based on the actual reference signal.

Step 303: The user determines a reference signal sequence for performing channel measurement according to the determined channel measurement type.

Step 304: The user performs channel measurement with the configured measurement bandwidth on the configured measurement carrier frequency by using the determined reference signal sequence.

If the channel measurement type is determined according to step 302 to perform channel measurement based on the reference signal corresponding to the measurement carrier frequency, that is, the conventional channel measurement is performed, the user determines that the reference signal sequence used for channel measurement is corresponding to the measurement carrier frequency. Referring to the signal sequence, the user uses the reference signal sequence corresponding to the measured carrier frequency to perform channel measurement on the configured measurement carrier frequency with the configured measurement bandwidth; if the channel measurement type is determined according to step 302, the channel measurement is based on the actual reference signal. That is, the newly defined channel measurement is performed, and the user first determines the actual reference signal sequence, and then performs channel measurement on the configured measurement carrier frequency with the configured measurement bandwidth.

The user may determine the actual reference signal sequence according to the carrier frequency of the serving cell, or determine the actual reference signal sequence according to the carrier frequency on which the configured base station transmits the actual reference signal, and may also be configured according to the base station. The reference signal offset information determines the actual reference signal sequence, which will be specifically described in the following embodiments. With the foregoing method in this embodiment, a channel measurement indication is added to the RRC signaling to indicate the type of the channel measurement, and the user can correctly reconstruct the reference signal consistent with the actual transmitted reference signal, thereby performing correct channel measurement. Improve the accuracy and accuracy of channel measurement.

In an embodiment of the present embodiment, the RRC signaling may be based on the configuration of the existing channel measurement, and no new carrier frequency information is added, that is, the RRC signaling includes only the measurement load configured by the base station for the user. Frequency (for example) and measurement bandwidth.

Corresponding to this embodiment, if the user determines, according to the channel measurement indication (for example, Measjype), that the channel measurement type is channel measurement based on the reference signal corresponding to the measurement carrier frequency, the user uses in step 303. The reference signal corresponding to the measurement carrier frequency configured by the base station is configured on the configured measurement carrier frequency; the channel measurement is performed on the configured measurement bandwidth; if the user according to the channel measurement indication in step 302 (Measjype) Determining that the channel measurement type is based on the actual reference signal for channel measurement, then the user uses the carrier frequency of the serving cell in step 303 (eg, the carrier frequency as the system bandwidth (that is, the carrier frequency on which the base station transmits the actual reference signal) Using the reference signal corresponding to the carrier frequency of the serving cell, performing channel measurement on the configured measurement carrier frequency / _c with the configured measurement bandwidth. That is, if the base station only configures a carrier frequency for the user, that is, measurement The carrier frequency is determined by the user through the channel measurement indication (Measjype) to determine the channel based on the actual reference signal. The user will be arranged on the carrier frequency to the serving cell / _c (which is considered the base station transmits the actual reference signal is based / _c) generating a reference signal measurement made.

In another implementation manner of this embodiment, the RRC signaling may include two carrier frequencies, one of which is a carrier frequency on which the base station transmits the actual reference signal, and the other is that the base station performs a normal channel for the user configured by the user. Carrier frequency at the time of measurement (ie measuring carrier frequency) f _cl . In this embodiment, the RRC signaling may be based on an existing measurement configuration (the base station only configures one carrier frequency for the UE, that is, the measurement carrier frequency / _cl ), adds a carrier frequency information, and newly added carrier frequency information. The carrier frequency on which the reference signal is transmitted for the base station. For example, as shown in Figure 6, the base station configures the carrier frequencies / _cl and / _c for the user. Where ^ is the measured carrier frequency configured by the base station for the user, and f _c is the newly added carrier frequency, that is, the carrier frequency on which the base station transmits the actual reference signal.

Corresponding to the embodiment, if the user determines, according to the channel measurement indication (Measjype), that the channel measurement type is channel measurement based on the reference signal corresponding to the measurement carrier frequency, the user uses the base station in step 303. a reference signal corresponding to the measurement carrier frequency i configured for the user, On the configured measurement carrier frequency / _cl , the channel measurement is performed with the configured measurement bandwidth, that is, the user performs regular channel measurement; if the user determines the channel measurement type based on the channel measurement indication (Measjype) in step 302 is based on The actual reference signal is used for channel measurement, and the user uses the carrier frequency/based on which the base station transmits the actual reference signal for the base station configured by the user in step 303. Corresponding reference signals are used to perform channel measurement with the configured measurement bandwidth on the configured measurement carrier frequency / _cl , that is, the user performs a newly defined channel measurement. That is, if the base station configures two carrier frequencies for the user, that is, and the user determines that the channel measurement is based on the actual reference signal by the channel measurement indication (Measjype), the user will be on the configured carrier frequency / _c ; The measurement is made with the reference signal generated by the base station.

One of the two carrier frequencies configured by the base station for the user through RRC signaling is used to indicate the carrier frequency at the time of measurement (that is, the measurement carrier frequency), and the other is used to indicate the base station based on the base station when transmitting the reference signal. frequency. The base station here may be the base station of the serving cell or the base station of other cells. That is to say, the newly added carrier frequency may be the carrier frequency of the serving cell, or may be the other measurement object configured by the base station or the carrier frequency of other cells, and this embodiment is not limited thereto.

In still another embodiment of this embodiment, the RRC signaling may be based on an existing configuration (the base station only configures one carrier frequency for the UE, that is, the measurement carrier frequency f _cl ), and newly adds a reference signal offset information (for example, offset) And the reference signal offset information is used to indicate an offset of the reference signal sequence corresponding to the measurement carrier frequency relative to the actual reference signal sequence sent by the base station, or to indicate a reference signal corresponding to the measured carrier frequency sent by the base station. The offset of the sequence.

Wherein the reference signal sequence is generated according to the maximum bandwidth, for example

= 110 generated sequence, which can be pre-generated and stored on the user side. According to different bandwidth configurations, the user takes out the corresponding part of the stored sequence and maps it to ^;). And performing OFDM baseband signal generation according to the equation (3),

s^{t)= _α , ι .strict _f (f— _{N +} ^ _a , (3) where 0≤t<{N _{CPJ +} N), T _s ,

) = "L ^L W _s /2" - 1. For the actual bandwidth of the system, =12 is the number of subcarriers per resource block, N _ei is the length of the CP, N is the length of the FFT, and 7 is the length of the sampling point. =0 corresponds to the subcarrier number of the center carrier frequency point, as shown in Figure 4.

Corresponding to the implementation manner, if the channel measurement type indicated by the channel measurement indication (Measjype) is: performing channel measurement based on the reference signal corresponding to the measurement carrier frequency / _cl , the user performs a conventional channel measurement, that is, using the measurement carrier frequency / _el The corresponding reference signal, on the configured measurement carrier frequency / _el , performs channel measurement according to the configured measurement bandwidth. The reference signal sequence used is ( '), where ' = + JV ^DL _ , N^ is the configured bandwidth, as shown in Figure 5. Wherein, since the channel measurement type is the conventional channel measurement described above, the reference signal sequence is also applicable to the foregoing embodiment, and m is 0.

Corresponding to the implementation manner, if the channel measurement type indicated by the channel measurement indication (Mea _S _typ _e ) is: performing channel measurement based on the actual reference signal, the user determines the actual reference signal according to the foregoing reference signal offset information offset, and uses the determined actual The reference signal, that is, the base station's generated reference signal, is configured in the measured carrier frequency /. On i, channel measurement is performed according to the configured measurement bandwidth.

In one embodiment, the actual reference signal sequence employed is ^ ( ';), where m' ^ m + N ^ - N^ -AN^ , where ΔΛ^; is the configured measurement carrier frequency / _cl The number of resource blocks that differ from the carrier frequency on which the base station transmits the actual reference signal. In this embodiment, the offset information may be in units of physical resource blocks (PRBs). For example, the configured measurement carrier frequency (that is, the center carrier frequency when the user performs regular channel measurement) is /^ The base station transmits the actual reference signal based on the carrier frequency of / _c , and the offset difference between / _cl and ^ is 30. PRB, ie AN = 30, as shown in Figure 6.

In another embodiment, the actual reference signal sequence used is ^ J ';), where m' ^ m + N ' ^OL - N^ , N^ is the configured bandwidth, which is different from the previous embodiment. Yes, the value of m is not 0, but directly the configured reference signal offset value (offset value). At this time, the RRC signaling is ^ and the offset value.

In this embodiment, the channel measurement indication may be delivered by the measurement object information element of the RRC signaling.

In one embodiment, a new type ("Measjype" as described below) may be added when configuring a measurement object ("measObject") information as described below, such that the channel measurement indicates a measurement object located in the RRC signaling Before the information.

In another embodiment, it may be inside the measurement object information (as described below)

"MeasObjectEUTRA" internal) Adds a type indication ("Meas_type" as described below) such that the channel measurement indication is located inside the measurement object information of the RRC signaling. As shown below, in this embodiment, "carrierFreqJ" represents the newly added carrier frequency information. The details of the carrier frequency information are as described above.

Wherein, "M _{eaS_type} " is a new field (referred to as a new field) added in the measurement object information element of the RRC signaling according to an embodiment of the present invention, which is indicated by "ENUMERATED {0, 1 }" The channel measurement based on the reference signal corresponding to the configured measurement carrier frequency is also performed based on the actual reference signal.

By performing the channel measurement by the method of the embodiment, the user can correctly reconstruct the reference signal consistent with the actual transmitted reference signal, thereby enabling accurate measurement. Example 2

Embodiment 2 of the present invention provides a method for configuring a channel measurement, which corresponds to the channel measurement method of Embodiment 1, and the same content as Embodiment 1 is not repeatedly described in Embodiment 2. Figure 7 is a flow chart of the method; referring to Figure 7, the method includes:

Step 701: The base station sends RRC signaling to the user, where the RRC signaling includes a channel measurement indication, a measurement carrier frequency configured by the base station for the user, and a measurement bandwidth, where the channel measurement indication is used to indicate a channel measurement type, so that The user determines the channel measurement type based on the channel measurement indication.

The channel measurement type includes: performing channel measurement based on a reference signal corresponding to the measurement carrier frequency, or performing channel measurement based on the actual reference signal. The specific content and location of the channel measurement indication have been described in detail in Embodiment 1, and the content thereof is incorporated herein, and details are not described herein again.

In an implementation of step 701, no new carrier frequency information is added to the RRC signaling, and the user When determining that the channel measurement type is based on the reference signal corresponding to the measurement carrier frequency according to the channel measurement indication, the user performs a conventional channel measurement, that is, using a reference signal corresponding to the configured measurement carrier frequency, configured On the measurement carrier frequency, the channel measurement is performed with the configured measurement bandwidth; when the user determines that the channel measurement type is based on the actual reference signal according to the channel measurement indication, the user performs the foregoing newly defined channel measurement, that is, The carrier frequency of the serving cell is used as the carrier frequency on which the base station transmits the actual reference signal, and the channel measurement is performed with the configured measurement bandwidth on the configured measurement carrier frequency by using the reference signal corresponding to the carrier frequency of the serving cell.

In another implementation of the step 701, the RRC signaling includes, in addition to the measurement carrier frequency and the measurement bandwidth configured by the base station for the user, the base station is configured to send the actual reference signal to the base station configured by the user. Carrier frequency. At this time, when the user determines that the channel measurement type is based on the reference signal corresponding to the measurement carrier frequency according to the channel measurement indication, the user performs normal channel measurement, that is, uses the reference signal corresponding to the configured measurement carrier frequency. Channel measurement is performed with the configured measurement bandwidth on the configured measurement carrier frequency; when the user determines that the channel measurement type is based on the actual reference signal according to the channel measurement indication, the user performs the foregoing newly defined channel measurement. That is, the reference signal corresponding to the carrier frequency on which the configured base station transmits the actual reference signal is used to perform channel measurement on the configured measurement carrier frequency with the configured measurement bandwidth.

In still another implementation of the step 701, the RRC signaling includes, in addition to the measurement carrier frequency and the measurement bandwidth configured by the base station for the user, reference signal offset information configured by the base station for the user, where the reference The signal offset information indicates a relative offset between the reference signal sequence reconstructed based on the reference signal corresponding to the configured measurement carrier frequency and the actual reference signal sequence transmitted by the base station. At this time, when the user determines that the channel measurement type is based on the reference signal corresponding to the measurement carrier frequency according to the channel measurement indication, the user performs normal channel measurement, that is, uses a reference signal corresponding to the configured measurement carrier frequency. Channel measurement is performed with the configured measurement bandwidth on the configured measurement carrier frequency; when the user performs channel measurement based on the actual reference signal according to the channel measurement indication, the actual reference signal is determined according to the reference signal offset information. Using the actual reference signal, the configured measurement bandwidth is used to perform the signaling on the configured measurement carrier frequency, and the user performs channel measurement based on the reference signal corresponding to the measurement carrier frequency or performs an actual reference based on the content included in the RRC signaling. The channel measurement of the signal has been described in detail in Embodiment 1, and will not be described herein. By configuring the channel measurement by the method of the embodiment, the user can correctly reconstruct the reference signal consistent with the actual transmitted reference signal, thereby enabling accurate measurement. The embodiment of the present invention further provides a user equipment. The principle of the user equipment is similar to that of the first embodiment. Therefore, the implementation of the method in Embodiment 1 can be implemented in the specific implementation, and the repeated description is not repeated.

Example 3

Embodiment 3 of the present invention provides a user equipment. Figure 8 is a schematic diagram of the composition of the user equipment. Referring to Figure 8, the user equipment includes:

The receiving unit 81 is configured to receive RRC signaling sent by the base station, where the RRC signaling includes a channel measurement indication, and a measurement carrier frequency and a measurement bandwidth configured by the base station for the user;

The first determining unit 82 determines a channel measurement type according to the channel measurement indication, where the channel measurement type includes: performing channel measurement based on a reference signal corresponding to the measurement carrier frequency, or performing a second determining unit 83 based on the actual reference signal, according to The channel measurement type determined by the first determining unit determines a reference signal sequence for performing channel measurement;

The measuring unit 84 performs channel measurement with the configured measurement bandwidth on the configured measurement carrier frequency using the determined reference signal sequence.

In an embodiment of the embodiment, the RRC signaling includes only the measurement carrier frequency and the measurement bandwidth configured by the base station for the user.

In this embodiment,

If the first determining unit 82 determines that the channel measurement type is based on the reference signal corresponding to the measurement carrier frequency, and performs channel measurement according to the channel measurement indication, the second determining unit 83 determines that the reference signal sequence used for channel measurement is Configuring a reference signal sequence corresponding to the measured carrier frequency, and the measuring unit 84 uses the reference signal corresponding to the measured carrier frequency to perform channel measurement on the configured measurement carrier frequency with the configured measurement bandwidth; The determining unit 82 determines that the channel measurement type is based on the actual reference signal according to the channel measurement indication, and the second determining unit 83 determines the carrier frequency of the serving cell as the carrier frequency on which the base station transmits the actual reference signal. The reference signal sequence used for channel measurement is a reference signal sequence corresponding to the carrier frequency of the serving cell, and the measuring unit 84 uses the reference signal corresponding to the carrier frequency of the serving cell. No. On the configured measurement carrier frequency, the channel measurement is performed with the configured measurement bandwidth.

In another embodiment of the present embodiment, the RRC signaling includes a measurement carrier frequency configured by the base station for the user, a measurement bandwidth, and a carrier frequency on which the base station transmits the actual reference signal (where the base station here may It is the base station of the serving cell, and may also be the base station of other measurement objects or other cells).

In this embodiment,

If the first determining unit 82 determines that the channel measurement type is based on the reference signal corresponding to the measurement carrier frequency, and performs channel measurement according to the channel measurement indication, the second determining unit 83 determines that the reference signal sequence used for channel measurement is Configuring a reference signal sequence corresponding to the measured carrier frequency, and the measuring unit 84 uses the reference signal corresponding to the measured carrier frequency to perform channel measurement on the configured measurement carrier frequency with the configured measurement bandwidth; The determining unit 82 determines that the channel measurement type is based on the actual reference signal according to the channel measurement indication, and the second determining unit 83 determines that the reference signal sequence for performing channel measurement is used by the configured base station to transmit the actual reference signal. Based on the reference signal sequence corresponding to the carrier frequency, the measuring unit 84 uses the reference signal corresponding to the carrier frequency on which the configured base station transmits the actual reference signal, and performs channel on the configured measurement carrier frequency with the configured measurement bandwidth. measuring.

In still another implementation manner of this embodiment, the RRC signaling includes a measurement carrier frequency, a measurement bandwidth, and reference signal offset information configured by the base station for the user, where the reference signal offset information indicates that the user performs the measurement based on the measurement. The relative offset between the reference signal sequence reconstructed by the frequency reference signal and the actual reference signal sequence transmitted by the base station.

In this embodiment,

If the first determining unit 82 determines that the channel measurement type is based on the reference signal corresponding to the measurement carrier frequency, and performs channel measurement according to the channel measurement indication, the second determining unit 83 determines that the reference signal sequence used for channel measurement is Configuring a reference signal sequence corresponding to the measured carrier frequency, and the measuring unit 84 uses the reference signal corresponding to the measured carrier frequency to perform channel measurement on the configured measurement carrier frequency with the configured measurement bandwidth; The determining unit 82 determines that the channel measurement type is based on the actual reference signal according to the channel measurement indication, and the second determining unit 83 determines that the reference signal sequence for performing channel measurement is determined according to the reference signal offset information. The actual reference signal sequence, the measurement unit 84 determines an actual reference signal according to the reference signal offset information, and uses the determined actual reference signal to perform channel measurement on the configured measurement carrier frequency with the configured measurement bandwidth.

In this embodiment, the channel measurement indication may be by the measurement object information element of the RRC signaling. Pass. The channel measurement indication is located before the measurement object information of the RRC signaling, or the channel measurement indication is located inside the measurement object information of the RRC signaling.

By performing channel measurement by the user equipment of this embodiment, the user can correctly reconstruct the reference signal consistent with the actual transmitted reference signal, thereby enabling accurate measurement. The embodiment of the present invention further provides a base station. The principle of solving the problem is similar to the method of the second embodiment. Therefore, the implementation of the method in the second embodiment may be referred to in the specific implementation, and the repeated description is omitted.

Example 4

Embodiment 4 of the present invention provides a base station. FIG. 9 is a schematic structural diagram of the base station. Referring to FIG. 9, the base station includes:

The sending unit 91 sends RRC signaling to the user, where the RRC signaling includes a channel measurement indication, and a measurement carrier frequency and a measurement bandwidth configured by the base station for the user, so that the user determines the channel measurement type according to the channel measurement indication. The channel measurement type includes: performing channel measurement based on a reference signal corresponding to a measurement carrier frequency, or performing channel measurement based on an actual reference signal.

among them,

In an embodiment of the embodiment, the RRC signaling includes a measurement carrier frequency and a measurement bandwidth configured by the base station for the user.

In another implementation manner of this embodiment, the RRC signaling includes a measurement carrier frequency configured by the base station for the user, a measurement bandwidth, and a carrier frequency on which the base station transmits the actual reference signal (where the base station herein may be The base station of the serving cell may also be a base station of other measurement objects or other cells.

In this embodiment, the channel measurement indication may be delivered by the measurement object information element of the RRC signaling. The channel measurement indication is located before the measurement object information of the RRC signaling, or the channel measurement indication is located inside the measurement object information of the RRC signaling.

By performing the channel measurement configuration by the base station in this embodiment, the user can correctly reconstruct the reference signal that is consistent with the actual transmitted reference signal, thereby enabling accurate measurement. The embodiment of the present invention further provides a communication system, where the communication system includes the user equipment described in Embodiment 3 and the base station described in Embodiment 4.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a terminal device, the program causes the computer to execute the channel measurement method described in Embodiment 1 in the terminal device.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the channel measurement method described in Embodiment 1 in the terminal device.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes the computer to execute the configuration method of the channel measurement described in Embodiment 2 in the base station.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the configuration method of the channel measurement described in Embodiment 2 in a base station.

The above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps. Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that these descriptions are illustrative and not restrictive. A person skilled in the art can make various modifications and changes to the invention in accordance with the spirit and the principles of the invention, which are also within the scope of the invention.

Claims

Claim

A channel measurement method, where the method includes:

The user receives the RRC signaling sent by the base station, where the RRC signaling includes a channel measurement indication and a measurement carrier frequency and a measurement bandwidth configured by the base station for the user;

2. The method according to claim 1, wherein

If the user determines, according to the channel measurement indication, that the channel measurement type is a channel measurement based on a reference signal corresponding to the measurement carrier frequency, the user determines that the reference signal sequence used for channel measurement is a reference corresponding to the configured measurement carrier frequency. Signal sequence

If the user determines that the channel measurement type is based on the actual reference signal according to the channel measurement indication, the user uses the carrier frequency of the serving cell as the carrier frequency on which the base station transmits the actual reference signal, and determines to be used for performing The reference signal sequence of the channel measurement is a reference signal sequence corresponding to the carrier frequency of the serving cell.

The method according to claim 1, wherein the RRC signaling further comprises a carrier frequency on which the base station transmits the actual reference signal for the base station configured by the user.

4. The method according to claim 3, wherein

If the user determines that the channel measurement type is based on the actual reference signal according to the channel measurement indication, the user determines that the reference signal sequence for performing channel measurement is based on when the configured base station transmits the actual reference signal The reference signal sequence corresponding to the carrier frequency.

The method of claim 1, wherein the RRC signaling further comprises reference signal offset information, the reference signal offset information indicating that the user performs channel measurement based on the reference signal corresponding to the measured carrier frequency The relative offset between the reconstructed reference signal sequence and the actual reference signal sequence transmitted by the base station.

6. The method according to claim 5, wherein

If the user determines that the channel measurement type is based on the actual reference signal according to the channel measurement indication, the user determines that the reference signal sequence used for channel measurement is a reference signal determined according to the reference signal offset information. sequence.

The method according to any one of claims 1 to 6, wherein

The channel measurement indication is located before the measurement object information of the RRC signaling, or the channel measurement indication is located inside the measurement object information of the RRC signaling.

8. A method for configuring a channel measurement, where the method includes:

The base station sends RRC signaling to the user, where the RRC signaling includes a channel measurement indication and a measurement carrier frequency and a measurement bandwidth configured by the base station for the user, so that the user determines a channel measurement type according to the channel measurement indication, The channel measurement type includes: performing channel measurement based on a reference signal corresponding to the measured carrier frequency, or performing channel measurement based on the actual reference signal.

The method according to claim 8, wherein the RRC signaling further includes a carrier frequency on which the base station transmits the actual reference signal; or the RRC signaling further includes reference signal offset information, the reference The signal offset information indicates a relative offset between the reference signal sequence reconstructed by the user when performing channel measurement based on the reference signal corresponding to the measured carrier frequency and the actual reference signal sequence transmitted by the base station.

10. The method according to claim 8 or 9, wherein

A user equipment, where the user equipment includes:

a receiving unit, which receives RRC signaling sent by the base station, where the RRC signaling includes a channel measurement indication and a measurement carrier frequency and a measurement bandwidth configured by the base station for the user;

a first determining unit, configured to determine a channel measurement type according to the channel measurement indication, where the channel measurement type comprises: performing channel measurement based on a reference signal corresponding to the measurement carrier frequency, or performing channel according to an actual reference signal a second determining unit that determines a reference signal sequence for performing channel measurement according to the determined channel measurement type;

And a measuring unit that performs channel measurement with the configured measurement bandwidth on the configured measurement carrier frequency using the determined reference signal sequence.

12. The user equipment according to claim 11, wherein

If the first determining unit determines that the channel measurement type is channel measurement based on the reference signal corresponding to the measurement carrier frequency, the second determining unit determines that the reference signal sequence for performing channel measurement is a reference corresponding to the configured measurement carrier frequency. Signal sequence

If the first determining unit determines that the channel measurement type is based on the actual reference signal for channel measurement, the second determining unit determines, as the carrier frequency on which the base station transmits the actual reference signal, the carrier frequency of the serving cell, and determines The reference signal sequence of the channel measurement is a reference signal sequence corresponding to the carrier frequency of the serving cell.

The user equipment according to claim 11, wherein the RRC signaling further comprises a carrier frequency on which the base station transmits an actual reference signal for the base station configured by the user.

14. The user equipment according to claim 13, wherein

If the first determining unit determines that the channel measurement type is based on the actual reference signal for channel measurement, the second determining unit determines that the reference signal sequence for performing channel measurement is based on when the configured base station transmits the actual reference signal The reference signal sequence corresponding to the carrier frequency.

The user equipment according to claim 11, wherein the RRC signaling further includes reference signal offset information, and the reference signal offset information indicates that the user performs channel measurement based on the reference signal corresponding to the measured carrier frequency. The relative offset between the constructed reference signal sequence and the actual reference signal sequence transmitted by the base station.

16. The user equipment according to claim 15, wherein

If the first determining unit determines that the channel measurement type is based on the actual reference signal for channel measurement, the second determining unit determines that the reference signal sequence for performing channel measurement is offset according to the reference signal The reference signal sequence determined by the information.

The user equipment according to any one of claims 11 to 16, wherein

The channel measurement indication is located before the measurement object of the RRC signaling, or the channel measurement indication is located inside the measurement object of the RRC signaling.

A base station, where the base station is configured to perform channel measurement, where the base station includes: a sending unit that sends RRC signaling to a user, where the RRC signaling includes a channel measurement indication and the base station is the user Configuring a measurement carrier frequency and a measurement bandwidth, so that the user determines a channel measurement type according to the channel measurement indication, where the channel measurement type includes: performing channel measurement based on a reference signal corresponding to the measurement carrier frequency, or performing channel based on an actual reference signal measuring.

The base station according to claim 18, wherein the RRC signaling further includes a carrier frequency on which the base station transmits the actual reference signal; or the RRC signaling further includes reference signal offset information, the reference The signal offset information indicates a relative offset between the reference signal sequence reconstructed by the user when performing channel measurement based on the reference signal corresponding to the measured carrier frequency and the actual reference signal sequence transmitted by the base station.

20. The base station according to claim 18 or 19, wherein

A communication system, wherein the communication system comprises the user equipment of any one of claims 11-17 and the base station of any one of claims 18-20.

A computer readable program, wherein the program causes the computer to perform the channel measurement method according to any one of claims 1 to 7 in the terminal device when the program is executed in the terminal device.

A storage medium storing a computer readable program, wherein the computer readable program causes the computer to perform the channel measurement method according to any one of claims 1 to 7 in a terminal device.

A computer readable program, wherein the program causes a computer to perform the configuration method of the channel measurement according to any one of claims 8 to 10 in the base station when the program is executed in a base station.

A storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the configuration method of the channel measurement according to any one of claims 8 to 10 in a base station.